A vertical parabolic curve has its PVI at station 18 + 50.00 and elevation 69.32. The grade of the back tangent is -2.8 percent, the grade of the for- ward tangent is 5.6 percent, and the curve length is 600 ft. Set up a table showing curve elevations at the PVC, at the PVT, and at half-station points along the curve. Compute the station and elevation of the curve turning point.

A vertical parabolic curve has its PVI at station 18 + 50.00 and elevation 69.32. The grade of the back tangent is -2.8 percent, the grade of the for- ward tangent is 5.6 percent, and the curve length is 600 ft. Set up a table showing curve elevations at the PVC, at the PVT, and at half-station points along the curve. Compute the station and elevation of the curve turning point.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A vertical parabolic curve has its PVI at station 18 + 50.00 and elevation 69.32. The grade of the back tangent is -2.8 percent, the grade of the forward tangent is 5.6 percent, and the curve length is 600 ft. Set up a table showing curve elevations at the PVC, at the PVT, and at half-station points along the curve. Compute the station and elevation of the curve turning point.

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Step 1: Introduction

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Step 2: Given

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Step 3: Caluclating the stations of PVC, PVT

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Step 4: Calculating the elevation of PVC, equation of curve and elevation of PVT

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Step 5: Calculating the elevation and station of turning point

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Step 6: Tabulation of elevation at half points along the curve

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